Information transmission network has a number of control stages on a common board for direction switching for redundant control

摘要

The data memory system has a host computer server (120) that transfers information to a number of disc drives (140) via a system interface (160) that is based around a cache memory (220). The interconnection is made via front and back control units (180,200) that receive inputs from cross over switching stages (260).This provides redundancy to protect against failure.